Ultrasonic and piezoelectric properties of the BT-LMT ceramic system
authors Samulionis, V; Salak, A; Banys, J; Ferreira, VM; Keburis, P
nationality International
journal JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
author keywords piezoelectric ceramics; piezoelectric properties
keywords RELAXOR BEHAVIOR; TRANSDUCERS
abstract Ultrasonic and piezoelectric studies of lead free ceramic system structures of (1 - x)BaTiO3-La-x(Mg1/2Ti1/2)O-3 (BT-LMT) are presented in this contribution. It was shown. that such materials with x = 0.025, 0.05, 0.075 and 0.1 LMT content undergo phase transitions and exhibit piezoelectric effect in the low temperature phases. Anomalies of ultrasonic velocity and attenuation at phase transitions have been observed in these materials. Measurements of temperature dependencies of ultrasonic velocity and attenuation revealed anomalies related to phase transitions in these materials. It was shown that, at room temperature and under dc bias electric field, these ceramics behave as a piezoelectrics because of electrostriction. (c) 2007 Elsevier Ltd. All rights reserved.
publisher ELSEVIER SCI LTD
issn 0955-2219
year published 2007
volume 27
issue 13-15
beginning page 4003
ending page 4006
digital object identifier (doi) 10.1016/j.jeurceramsoc.2007.02.068
web of science category Materials Science, Ceramics
subject category Materials Science
unique article identifier WOS:000248822800091
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journal impact factor 3.794
5 year journal impact factor 3.536
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